Granted Patent
Utility
US 4,483,156 · App. 06/604,664
Bi-directional variable subcooler for heat pumps
Inventor:
Gary L. Oudenhoven
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Apr 27, 1984
Inventor
Gary L. Oudenhoven
Assignee (at issue)
The Trane Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.